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Location Spain, Baleares
Central coordinates 1o 28.00' East  38o 49.00' North
IBA criteria A1, A4i, A4ii, B1i, B1ii, B2, B3, C1, C2, C3, C6
Area 2,623 ha
Altitude 0 - 159m
Year of IBA assessment 2007


Site description The site includes working and abandoned saltpans, two lakes and several small islets. There are small areas of scrub.

Key Biodiversity This is an important site for breeding seabirds and waterbirds.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Balearic Shearwater Puffinus mauretanicus breeding  1991  102-275 breeding pairs  medium  A1, A4ii, B1ii, B2, C1, C2, C6  Critically Endangered 
European Storm-petrel Hydrobates pelagicus breeding  1991  152-400 breeding pairs  medium  B1ii, B2, C2, C6  Least Concern 
Black-necked Grebe Podiceps nigricollis winter  1995  765 individuals  good  A4i, B1i, C3  Least Concern 
Himantopus himantopus breeding  1996  79-135 breeding pairs  good  B1i, C2, C6  Not Recognised 
Charadrius alexandrinus resident  1996  273 breeding pairs  good  B1i, B2, C3  Not Recognised 
Audouin's Gull Larus audouinii resident  1996  268 breeding pairs  medium  A1, A4i, B1i, B2, C1, C2, C6  Least Concern 
Marmora's Warbler Sylvia sarda resident  1996  150 breeding pairs  poor  B3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ibiza, biodiversity and culture World Heritage Site 11,231 protected area contains site 2,623  
Salinas de Ibiza y Formentera Wetlands of International Importance (Ramsar) 1,640 protected area contained by site 1,640  
Ses Salines de Ibiza, Formentera e Islas des Freus Natural Reserve 1,500 protected area contained by site 1,500  


IUCN habitat Habitat detail Extent (% of site)
Forest Native coniferous woodland  35%
Shrubland Sclerophyllous scrub, garrigue and maquis  5%
Wetlands (inland) Standing brackish and salt water; Water fringe vegetation  -
Sea Open Sea; Sea inlets and coastal features  30%
Coastline Mud flats & sand flats; Rock stacks and islets; Sand dunes & beaches; Sea cliffs and rocky shores; Shingle & stony beaches  -
Artificial - terrestrial Arable land; Other urban and industrial areas  30%

Land use

Land-use Extent (% of site)
agriculture -
hunting 50%
tourism/recreation 15%
urban/industrial/transport 40%

Protection status National High International Partial1,500 ha of IBA covered by Natural Reserve (Ses Salines de Ibiza, Formentera e Islas des Freus, 1,500 ha). 1,640 ha of IBA covered by Ramsar Site (Salinas de Ibiza y Formentera, 1,640 ha). 1,179 ha of IBA covered by Special Protection Area (Islas de los Freus-Salinas de Ibiza y Formentera, 1,179 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Salt-pans of Ibiza and Formentera and Freus isles. Downloaded from on 27/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife